I use Paper Shredder to clear it all, at bootup and shutdown and I use manually very often. Mostly to clear my cache.
I never do that.. why bother? What is to be afraid of? Someone is tracking my online activity... I am being watched.... I am disconnecting the power cord..... blink the screen went blank....
im clear my cookies every ending of internet banking transaction. If not, firefox will clear it automatically
When I close my browser. I set the option to clear the cookies as some cookies may track your activity